# Main - Haptic Grain Scrubber - Build Patch: [[Patches/Main/Main - Haptic Grain Scrubber]] Signal path: [[Patches/Main/Main - Haptic Grain Scrubber - SignalPath|SignalPath]] An incremental build of that patch. One or two cables at a time, so you can hear each stage and watch the interesting voltages on the Mordax DATA. Starting points, jack names, and the final cable list come from the patch note. DATA jack names and modes come from the official [DATA User Guide](https://mordax.link/DATA_User_Guide) (SYS V. 01.02.05, updated 230310), linked from [mordax.net](https://www.mordax.net/products/data). **Cable colors:** [[Cable Colors]] after [Learning Modular](https://learningmodular.com/choosing-patch-cables/): ⚪ Gray 1 V/oct · 🔵 Blue modulation · 🟡 Yellow audio · 🔴 Red gates/triggers · 🟢 Green clock/sync · ⚫ Black external ## Before you start - Power the case as usual. Seat the DATA in the main rack if it is not already there. The guide says its microSD card must stay in the slot during use. - Monitors or the A-540 down at first. Synthrotek Echo jack silk-screen is check panel. - Set every module to the starting points in the [[Patches/Main/Main - Haptic Grain Scrubber|patch note]] before you add cables: Mother-32 on a busy 16-step pattern with a bright filter; Beads in latched grain generation, DENSITY 2 o'clock, SIZE 1 o'clock, TIME attenurandomizer about 2 o'clock, PITCH attenurandomizer at 1 o'clock, DRY/WET fully clockwise once frozen, REVERB 12 o'clock, FEEDBACK counter-clockwise; BeetTweek in Ratchet Mode, output A's augment set to spring trail −5 V to 5 V; Stages segment 1 on RAMP, looping, slider about two-thirds up; Echo Rate 12 o'clock, Feedback 11 o'clock, Mix 10 o'clock. - On the DATA, open the **Oscilloscope** program from the main menu. In each channel's pop-up menu, set **COUPL** to **DC**. The guide says you typically want to view signals as DC; AC coupling blocks a steady voltage and will make a clock or a stepped CV sit at 0 V or droop. Use trigger mode **AUTO** whenever the time scale is in the hundreds of milliseconds or in seconds. **DATA jacks, as named in the User Guide:** four **Input Jacks** (±10 V), four **Buffered Through Jacks**, and four **Output Jacks**. This build uses only the inputs and the throughs. The guide: "Regardless of the program running, a signal present at an Input Jack is buffered and sent back out of its corresponding Through Jack for use elsewhere in your patch." The official panel photo on mordax.net numbers those channels **1–4**; each Through Jack sits directly under its Input Jack, with a downward triangle between them. The panel does not silk-screen the words Input or Through; if your panel reads differently, check the panel. The Output Jacks (the right-hand bank, also numbered 1–4) are unused here. **Pass-through habit:** to watch a signal, unplug the destination end, go from the source into a DATA Input Jack, and continue from that channel's Buffered Through Jack to the destination. The cable color stays the color of the signal. The DATA has four channels, so they get reassigned as the build moves. A running plan is at the top of each step. ## 1. Hear the Mother-32 line, then freeze it **DATA:** channel 1 watches the Mother-32 VCA going into Beads. Channel 2 can watch Beads L once there is a cloud. Channels 3–4 are free. **Cables** 1. 🟡 Yellow · Mother-32 VCA (out) -> DATA channel 1 Input Jack 2. 🟡 Yellow · DATA channel 1 Buffered Through Jack -> Beads IN L 3. 🟡 Yellow · Beads L (out) -> DATA channel 2 Input Jack 4. 🟡 Yellow · DATA channel 2 Buffered Through Jack -> A-540 channel A input 5. 🟡 Yellow · Beads R (out) -> A-540 channel B input **Set.** Run the busy 16-step pattern with a bright filter. Leave FREEZE off until a bar or two is in the buffer, then engage FREEZE and stop the sequencer or turn VOLUME down. DRY/WET fully clockwise once it is frozen. **Listen for.** First the raw sequence through Beads, then a frozen snapshot of that line, smeared into grains. Left and right are still the same, because the Echo is not in yet. **Watch on DATA.** Channel 1, Oscilloscope, TIME around 1MS or a slower AUTO window to see the sequence. After FREEZE, channel 1 goes quiet or still if you stopped the sequencer; channel 2 should keep showing grain bursts. SCALE 5.0V. **If it doesn't sound right.** No grains: DENSITY may be down, or Beads may not be in latched grain generation. The live sequence still bleeds through: DRY/WET is not fully clockwise, or FREEZE is off. ## 2. Scrub the buffer by hand **DATA:** channel 1 can stay on the (now quiet) input, or you can move it onto the BeetTweek CV. Channel 2 still Beads L. Channel 3 watches BeetTweek A. **Cables** 1. 🔵 Blue · BeetTweek A (out; Ratchet Mode, spring-trail augment set to −5 V to 5 V) -> DATA channel 3 Input Jack 2. 🔵 Blue · DATA channel 3 Buffered Through Jack -> Beads TIME CV input (6) **Set.** TIME attenurandomizer already past noon so this CV can move it. Turn the knob against the ratchet; let go and it springs back. **Listen for.** Pushing the BeetTweek against its spring scrubs back through the snapshot, and you feel the pull in your hand. Letting go returns you toward the front of the buffer. **Watch on DATA.** Channel 3, Oscilloscope or Voltage Monitor, TIME around 500MS to 1.0S, AUTO, COUPL DC, SCALE 2.0V or 5.0V. The trace should move as you wind the knob, over a −5 V to 5 V spring trail, and fall back when you let go. Channel 2's grains should shift as that voltage moves. **If it doesn't sound right.** No scrub: the TIME attenurandomizer may be at noon (no CV), or output A may not be on the spring-trail −5 V to 5 V augment. A hard jump instead of a spring: check that BeetTweek is in Ratchet Mode. ## 3. Add a slow pitch wobble **DATA:** channel 4 watches Stages output 1. **Cables** 1. 🔵 Blue · Stages output 1 (segment 1, looping RAMP) -> DATA channel 4 Input Jack 2. 🔵 Blue · DATA channel 4 Buffered Through Jack -> Beads PITCH CV input (6) (judgment call) **Set.** Segment 1 already looping, slider about two-thirds up. PITCH attenurandomizer at 1 o'clock for a slight wobble only. That cable is blue because it is CV into a Beads parameter, not a 1 V/oct jack (a judgment call in the patch note). **Listen for.** The frozen grains pick up a slow pitch wobble, on top of the hand scrub. **Watch on DATA.** Channel 4, Oscilloscope or Voltage Monitor, TIME around 1.0S to 5.0S, AUTO, COUPL DC, SCALE 2.0V. A slow triangle-like ramp, looping. Stages runs 0 to 8 V. **If it doesn't sound right.** No wobble: the segment may not be looped, or the PITCH attenurandomizer is at noon. Wild pitch leaps: turn the attenurandomizer down. ## 4. Put echo on the left **DATA:** unplug Beads L from the A-540 path (channel 2's Through Jack) and sit the Echo in that path. Echo jack silk-screen is check panel. **Cables.** Unplug DATA channel 2's Through Jack from A-540 A, then: 1. 🟡 Yellow · DATA channel 2 Buffered Through Jack -> Echo audio input (check panel) 2. 🟡 Yellow · Echo output (check panel) -> A-540 channel A input Beads R stays dry to A-540 B. **Set.** Echo Rate 12 o'clock, Feedback 11 o'clock, Mix 10 o'clock. **Listen for.** The left side picks up a dark, warbly PT2399 echo; the right stays clean. **Watch on DATA.** Channel 2 is still Beads L, now going into the Echo. If you would rather see the echoed signal, move channel 2 between the Echo output and A-540 A. **If it doesn't sound right.** Both sides echoed, or neither: the Echo may be in the wrong side, or Beads R may have been pulled too. A howl: lower Feedback. ## Full patch These are the cables from the patch note. If the DATA is still in the path, each watched signal is two cables (source to Input Jack, Buffered Through Jack to destination) instead of one. 1. 🟡 Yellow · Mother-32 VCA (out) -> Beads IN L 2. 🔵 Blue · BeetTweek A (out; Ratchet Mode, spring-trail augment set to −5 V to 5 V) -> Beads TIME CV input (6) 3. 🔵 Blue · Stages output 1 (segment 1, looping RAMP) -> Beads PITCH CV input (6) (judgment call) 4. 🟡 Yellow · Beads L (out) -> Echo audio input (check panel) 5. 🟡 Yellow · Echo output (check panel) -> A-540 channel A input 6. 🟡 Yellow · Beads R (out) -> A-540 channel B input With the DATA left in as of step 4, the watched paths are: cable 1 through DATA channel 1, cable 4 through channel 2, cable 2 through channel 3, and cable 3 through channel 4. Cables 5 and 6 run direct (unless you move channel 2 to sit on the Echo output instead of Beads L). The DATA can stay in or come out. To remove it, patch each watched signal straight from source to destination, as in the list above. The sound should not change; you just lose the graphs. **What it should sound like, once the last cable is in:** a frozen snapshot of the Mother-32 line, smeared into grains. Pushing the BeetTweek against its spring scrubs back through the snapshot, and you feel the pull in your hand. The left side gets a dark, warbly PT2399 echo; the right stays clean.